Method of filling an absorber generator



Sept. 4, 1934. E. NOEBEL METHOD OF FILLING AN ABSORBER GENERATOR FiledDec. 10, 1932 Patented Sept. 4, 1934 UNITED STATES METHOD OF FILLINGANZQBSOBBEB- GENERATOR Ernst Noebel, Berlin, Germany, assignor toSiemens-Schuckertwerke Aktiengesellschait, Berlm-Siemensstadt, Germany,a corporation of Germany Application December 10, 1932, Serial No.646,73! In Germany December 14, 1931 4 Claims. (01. 62-179) My inventionrelates to a method of filling an absorber-generator ready to be builtin an absorption refrigerating apparatus operating with solidabsorbents.

According to the invention the absorbent is applied in a finelydistributed form to metallic wool or cuttings or any other suitable heatconductor; whereupon the absorber-generator is charged with the metallicwool thus treatedand then the absorbent saturated, for instance, withammonia after closure of the absorber-generator. On saturating thetreated metallic wool, the ab-. sorbent applied tothe latter swells andfills up the entire space for the reception of the solid absorbent inthe absorber-generator. According to the method of my invention theabsorber-generator need not necessarily be provided inside with specialheat conducting walls, since the heat conduction in the metallic wool issufiicient to supply .heat to the solid absorbents and to carry 01f theheat of absorption. The preparation of the absorber-generator is thusgreatly simplified and by far more economical. In order to apply theabsorbent, for instance, strontium bromide, not ye}; enriched with theoperating medium to a good heat conductor, metallic wool or similarsubstances may, for instance, be immersed into the liquefied absorbent,or the liquefied absorbent may be sprayed on the metallic wool. In bothcases the metallic wool is coated with a thin vitreous layer of theabsorbing medium.

In the accompanying drawing is illustrated an embodiment of myinvention.

As shown in the drawing, the absorber-generator consists of a cylidricaljacket 1 and a concentric inner jacket 2 which are combined to acompletely closed vessel by welding cambered end covers 3 and 4 thereto.The inner jacket 2 serves for the reception of the heating element whichproduces the heat during the generating period.

The cover 4 isprovided with a branch 5 to which a gas conduit isconnected leading to the condenser (not shown). 6 denotes a thermometerpocket projecting into the interior 'of the abouter jacket 1 and theinner jacket 2 are combined by welding the cover-i3 thereto. At the openend of the vessel thus formed metallic wool '7 coated with pureabsorbing medium in the above-described manner is charged in saidvessel, care being taken to uniformly fill the container; withthe'filling medium by ramming the charge to such an extent as to permitthe absorbent, owing to the subsequent saturation with the operatingmedium, to swell up in the desired manner, so that a compact, finelyporous and good heat conducting mass results, which firmly contacts withthe walls of the absorber-generator. After the vessel has beencompletely charged the cover 4 is welded thereto; whereupon theabsorbing medium is saturated with the operating medium. In such anabsorber-generator, the metallic wool serves chiefly to conduct the heatto the walls thereof. Since the filling material is highly porous, thevaporous operating medium maybe easily supplied to or discharged fromall points of the absorber-generator. No special heat conducting wallsbeing necessary inside the space of the absorber-generator, the latteris consequently utilized to a higher degree.

The metallic wool is introduced into the absorber-generator at atemperature of about 300 to 400 centigrade immediately after theimmersion into the liquefied absorbing medium or after spraying theliquefied absorbing medium in a heated state on the metallic wool. Inthis manner, the absorbing medium is prevented to a great extent fromtaking up moisture so that a reliable operation of the refrigeratingapparatus is ensured, since slight traces of moisture in the solidabsorbent may give rise to serious troubles. In the method hithertoemployed, it was necessary to heat the boiler after charging it with theabsorbing medium so as to remove the residual moisture from theabsorbing medium. This meassubstance.

2. A method of preparing a filling mass for the generator-absorber of anabsorption apparatus in which a solid absorbent capable of being swelledis utilized, consisting in immersing metallic wool in the liquefiedabsorbing medium so as to provide the metallic wool with a coat of saidabsorbing substance.

3. A filling material for generator-absorbers of absorption apparatus inwhich a solid absorbent capable of being swelled is utilized consistingof dium so as to provide the heat conducting material with a coat ofsaid absorbing medium, charging the generator-absorber with the heatconducting material thus prepared, closing the generator-absorber andsaturating the absorbing medium with the operating medium.

ERNST NOEBEL.

